11113121100 has 36 divisors (see below), whose sum is σ = 32153964584. Its totient is φ = 2963498880.

The previous prime is 11113121083. The next prime is 11113121137. The reversal of 11113121100 is 112131111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18521569 + ... + 18522168.

Almost surely, 2^11113121100 is an apocalyptic number.

11113121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11113121100 is an abundant number, since it is smaller than the sum of its proper divisors (21040843484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11113121100 is a wasteful number, since it uses less digits than its factorization.

11113121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37043754 (or 37043747 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 11113121100 its reverse (112131111), we get a palindrome (11225252211).

It can be divided in two parts, 111131 and 21100, that added together give a palindrome (132231).

The spelling of 11113121100 in words is "eleven billion, one hundred thirteen million, one hundred twenty-one thousand, one hundred".